Kamień i aksamit

Recording by Marek Koscikiewicz.

Recording identifiers

ISRC
PLC691101745
CopyrightID (CopyrightChains transaction hash)
0xb8cc089401a86536f0b823c480549f8698b573ad148c295251601320e566d6cc
Copyright registration time
2026-07-06T10:03:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T08:25:35Z
Bitcoin block
957011
Canonical record hash
sha256:289d8e92842a040dbba13d3692f7db6c18c10a8f7f24553d1ea0aa7ef0a9fd13

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.